Carbureter.



C. M. STROUD.

CARBURETER. APPLICATION mw MAR. a, 1915.

1,171,074. patented Feb. 8,1916.

' r a werf" .Unire @straits PATENT curr CHARLES M. STROUD, OF MINNEAPOLIS, MINNESOTA, AISSIGNOR OF ONE-HALE TO WILLIAM J. BOWMAN, F MINNEAPOLIS, MINNESOTA.

To all 'whom t may concern.'

Be it known that I, CHARLES M. STROUD, a citizen of the'United States, resident of Minneapolis, county of Hennepin, State of Minnesota, have invented certain new and `useful Improvement-s in Carbureters, of

which the following is a specification.

The object of myinvention isto provide a carbureter inwhich all obstructions that would tend to prevent the free flow of gas and air through the carbureter are practically eliminated.

A further object' is to provide a carbureter having a very large capacity and one which will produce greater power and more speed of the motor.

Other objects of the invention will appear from the following detailed description.

The invention consists generally in various constructions and combinations, all as hereinafter described and particularly pointed out in. the claims.

In the accompanying drawings forming part of this specification, Figure 1 is a vertical sectional view through a carbureter embodying my invention, Fig. 2 is a horizontal sectional view of the same, "'Fig. 3v is a plan sectional view, showing the regu-V lating valve in its closed position. Fig. 4 is an exterior view of the carbureter.

In the drawing, 2 represents the air intake opening, having avalve 3 that is adjustable for climatic conditions in the usual way. The opening 2 leads to a passage 4 within al casing 5 and on one side of this casing .is a liquid fuel reservoir 6 communicating through a passage 7 with` a source of liquid fuel supply and provided with a float 8 having a valve 9 for closing the passage 7, the delivery of fuel to this reservoir being controlled by the movement of the vlioat as usual in devices Vof this kind.`

On one side of the lioat chamber the wall of the casing is provided with a shoulder 10 in which a port 11 'is formed, leading from the fioat chamber to the passage 4 within the casing. I may also provide additional ports 12 in this shoulder, but do not limit myself to the number shown, for in this respect the device is capable of modification to suit the various requirements of the carbureter. A wall or partition 13 is arranged within the casing 5, extending obliquely from the lower portion of the pas- Speciication of Letters Patent.

Patented Feb. 8, 1916.

Application filed March 8, 1915. Serial N o. 12,774.

sage 4 upwardly toward the shoulder 10 and at its upper end is separated from said shoulder by a comparatively narrow throat 14. This partition has the effect of defiecting the currents of air to the side wall of the casing, siderable velocity of the ports leading to the float chamber. A'valve 15 is centrally mounted on a shaft 16 that is journaled in the wall ofthe casing and is Vadapted to swing down upon the shoulder 10 and close the ports therein with the exception of the portll, and above this port 11 the valve 15 is provided with an opening 17 which allows the free escape of the liquid fuel from the chamber to mingle with the air passing through the throat 14. The opening 17 is of suiiicient size to allow the air to flow freely therethrough from the throat 14 when the valve is in its closed position.- A crank 18 is mounted on the. shaft 16 and provided with a lug 19 which coperates with a set screw 2O to form a stop for limiting the movement of the valve and the crank 18 is connected by a rod 21 with a similar crank 22 on the shaft 23 of a valve 24 that is mounted in the wall of the casing 5- above the valve 15. This shaft is also provided with an arm 25 having a set screw26 to engage a stop 27. The rod 21 is adjustable in the cranks 18 and 22 so that each valve can be moved independently of the lother to alter its position with respect to the passage and vary the How of the carbureter mixture therethrough. An operating arm 28 is mounted on the shaft 23 by means of which the driver of the car or the operator of the engine can open or close the valves simult neously. The valves are shown in po tion for utilizing the fuel from the single port 11 and whenever it is desired to increase the speed of the engine the valves will be-swung on their pivots to lift the valve l15 and expose the other ports. The air entering the casing 5 will pass up wardly on both sides of the partition 18 and mingle above the lvalve 15, the Volume of this air depending, of course, upon the position of the valve. With this carbureter the operator of the engine will have complete control of the engine and can genera-te more power and greater capacity than'with carbureters as ordinarily constructed. Fur- .cally no obstruction to the free flow of lthe mixture.

ln various ways the details of construction herein shown and described may be modified and `still be within the scope of my invention.

I claim as my invention:

l. A carbureter comprising a casing having an air intake passage and a shoulder provided with ports for delivering liquid fuel to said passage, a valve mounted to swing in said passage and having an edge to seat on said shoulder over said ports and provided with means for allowing apredetermined iow of liquid fuel when the valve is in its closed position, said valve also regulating the fiow of air through said passage and the movement of said valve toward its open position, allowing a proportionate increase in the flow of liquid fuel and air.

2. A carbureter comprising a casing having an air intake passage and a shoulder formed in the wall of said passage and provided with ports for delivering liquid fuel to said passage, a valve mounted to swing in said passage and having an edge to seat on said shoulder over said ports and provided with an opening therein to register with one of said ports for allowing the passage of apredetermined How of liquid fuel when the valve is in its closed position," the movement of said valve from its seat opening the other ports and increasing the flow of liquid fuel and simultaneously increasing the iiow of air through said passage past said shoulder and ports.

3. A carbureter comprising a casing having an air intake passage and a wall provided with a port for delivering liquid fuel to said passage, a valve mounted to swing in said passage and having an edgeto seat over said port and check the iow of liquid fuel and simultaneously reduce the How of air past said port, a wall provided in said -passage adjacent-to said valve and extending to a point near said port, there'being a narrow throat formed between said wall and said port, said throat being closed when said valve is in its closed position, the opening of said valve proportionately increasing the flow of ,air through said 'passage and fuel from said port.

4. A carbureter comprising a casing having an air intake passage and a wall provided with a port for delivering liquid fuel to said passage, a valve mounted to swing in said passage and having a part to seat over said port and check the flow of liquid fuel and simultaneously cut off the passage of air past said port, said valve having an opening therein forA allowing a predetermined supply of fuel and a predetermined volume of air to pass therethrough when said valve is in its closed position, the opening of said valve allowing a proportionate increase in the flow of liquid fuel and air past said valve.

5. A carbureter comprising a casing having an air intake passage and a wall provided with a port for delivering liquid fuel to said passage, a valve mounted to swing in said passage, -said valve having means for allowing the flow of a predetermined supply of fuel and a predetermined volume of air through saidi.passage when said valve is in its closed position, and means mounted in said passage for directing the air toward said port and forminga comparatively narrow throat adjacent to said port through which air is directed past said port and valve.

In witness whereof, I have hereunto set my hand this 4th day of March, 1915.

CHARLES'M. STROU D.

`Witnesses z GENEVIEVE E. SoRENsEN, EDWARD A. PAUL; 

